XML 73 R20.htm IDEA: XBRL DOCUMENT v3.2.0.727
Investments (Fixed Maturities and Equity Securities Excluding Investments Classified as Trading) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost $ 6,306,640 $ 5,866,873
Amortized Cost 33,888 28,881
Fair Value 6,456,275 6,194,564
Fair Value 34,343 29,500
Net unrealized gains on impaired securities relating to changes in value of securities subsequent to the impairment measurement date 9,700 10,000
Fixed maturities, available-for-sale    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 6,306,640 5,866,873
Gross Unrealized Gains 248,237 355,241
Gross Unrealized Losses 98,602 27,550
Fair Value 6,456,275 6,194,564
Other-than-temporary impairments in AOCI (4,459) (4,614)
Fixed maturities, available-for-sale | U.S. Treasury securities and obligations of U.S. government authorities and agencies    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 87,356 83,372
Gross Unrealized Gains 7,475 8,711
Gross Unrealized Losses 281 1
Fair Value 94,550 92,082
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | Obligations of U.S. states and their political subdivisions    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 514,705 310,518
Gross Unrealized Gains 9,079 15,323
Gross Unrealized Losses 8,318 187
Fair Value 515,466 325,654
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | Foreign government bonds    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 68,600 35,228
Gross Unrealized Gains 3,359 3,284
Gross Unrealized Losses 1,570 14
Fair Value 70,389 38,498
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | Public utilities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 719,827 683,652
Gross Unrealized Gains 36,525 62,060
Gross Unrealized Losses 15,630 3,288
Fair Value 740,722 742,424
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | Redeemable preferred stock    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 5,283 3,185
Gross Unrealized Gains 1,627 763
Gross Unrealized Losses 145 137
Fair Value 6,765 3,811
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | All other corporate securities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 3,879,079 3,743,804
Gross Unrealized Gains 158,995 227,939
Gross Unrealized Losses 70,141 20,820
Fair Value 3,967,933 3,950,923
Other-than-temporary impairments in AOCI (245) (247)
Fixed maturities, available-for-sale | Asset-backed securities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 479,954 395,180
Gross Unrealized Gains 8,082 8,281
Gross Unrealized Losses 689 1,210
Fair Value 487,347 402,251
Other-than-temporary impairments in AOCI (3,445) (3,531)
Fixed maturities, available-for-sale | Commercial mortgage-backed securities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 431,935 482,769
Gross Unrealized Gains 13,615 17,978
Gross Unrealized Losses 1,751 1,868
Fair Value 443,799 498,879
Other-than-temporary impairments in AOCI 0 0
Fixed maturities, available-for-sale | Residential mortgage-backed securities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 119,901 129,165
Gross Unrealized Gains 9,480 10,902
Gross Unrealized Losses 77 25
Fair Value 129,304 140,042
Other-than-temporary impairments in AOCI (769) (836)
Equity securities, available-for-sale    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 33,888 28,881
Gross Unrealized Gains 1,296 914
Gross Unrealized Losses 841 295
Fair Value 34,343 29,500
Equity securities, available-for-sale | Public utilities    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 66 66
Gross Unrealized Gains 10 23
Gross Unrealized Losses 0 0
Fair Value 76 89
Equity securities, available-for-sale | Industrial, miscellaneous & other    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 2 5
Gross Unrealized Gains 224 173
Gross Unrealized Losses 0 0
Fair Value 226 178
Equity securities, available-for-sale | Mutual funds    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 33,480 28,470
Gross Unrealized Gains 764 468
Gross Unrealized Losses 841 295
Fair Value 33,403 28,643
Equity securities, available-for-sale | Non-redeemable preferred stocks    
Summary of Investments Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 340 340
Gross Unrealized Gains 298 250
Gross Unrealized Losses 0 0
Fair Value $ 638 $ 590